CIS chapter 8

2 types of RFID tags

-Active RFID tags use the internal batteries for power, and they broadcast radio waves to a reader. -Passive RFID tags rely entirely on readers for their power

Mobile computing

A real-time connection between a mobile device and other computing environments, such as the Internet or an intranet.

Wireless Fidelity

A set of standards for wireless local area networks based on the IEEE 802.11 standard.

Propagation delay

Any delay in communications from signal transmission time through a physical medium

Bluetooth

Chip technology that enables short-range connection (data and voice) between wireless devices.

3 types of satellites circling Earth

geostationary-earth-orbit (GEO) medium-earth-orbit (MEO) low-earth-orbit (LEO): requires the highest number of satellites to cover the earth

Mobile computing has 2 major characteristics

Mobility: means that users carry a device with them and can initiate a real-time contact with other systems from where ever they happen to be. Broad reach means the fact that when users carry an open mobile device, they can be reached instantly, even across great distances.

Cellular telephones (cell phones)

Phones that provide two-way radio communications over a cellular network of base stations with seamless handoffs.

Mobile portal

A portal that aggregates and provides content and services for mobile users.

Internet of Things (IoT) Also called Internet of everything Internet of anything the industrial internet machine-to-machine (M2M) communication

A scenario in which objects, animals, and people are provided with unique identifiers and the ability to automatically transfer data over a network without requiring human-to-human or human-to-computer interaction.

Hotspot

A small geographical perimeter within which a wireless access point provides service to a number of users.

Location-based commerce (or L-commerce)

Mobile commerce transactions targeted to individuals in specific locations, at specific times.

collect data from many points over an extended space

Wireless sensor networks

Wide-area- wireless networks

connects users to the internet over geographically dispersed territory.

advantage of satellite

high bandwidth large coverage area

advantage of microwave

high bandwidth relatively inexpensive

MiFi

is a small, portable wireless device that provides users with a permanent WiFi hotspot wherever they go. Thus, users are always connected to the internet.

disadvantage of microwave

must have unobstructed line of sight susceptible to environmental interference

Telemetry

The wireless transmission and receipt of data gathered from remote sensors.

Wireless devices provide 3 major function to users

-they are small enough to easily carry or wear -they have sufficient computing power to perform productive tasks -they can communicate wirelessly with the internet and other devices.

Wireless local area networks (WLANs)

A computer network in a limited geographical area that uses wireless transmission for communication.

Personal area network

A computer network used for communication among computer devices close to one person.

Ultra-wideband

A high-bandwidth wireless technology with transmission speeds in excess of 100 Mbps that can be used for applications such as streaming multimedia from, say, a personal computer to a television.

wireless access point.

A transmitter with an antenna that connects a mobile device to a wired local area network is called a(n)

Satellite radio

A wireless system that offers uninterrupted, near CD-quality music that is beamed to your radio from satellites.

Microwave transmission systems

A wireless system that uses microwaves for high-volume, long-distance, point-to-point communication.

Global positioning system (GPS)

A wireless system that uses satellites to enable users to determine their position anywhere on Earth.

Radio-frequency identification RFID was developed to replace bar codes

A wireless technology that allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals.

Satellite transmission systems

A wireless transmission system that uses satellites for broadcast communications.

Wireless sensor

An antenna connecting a mobile device to a wired local area network.

Mobile commerce

Electronic commerce transactions that are conducted with a mobile device.

Near-field communications (NFC)

The smallest of the short-range wireless networks that is designed to be embedded in mobile devices such as cell phones and credit cards.

Voice portal

The voice equivalent of a Web portal, providing access to information through spoken commands and voice responses.

Radio transmission

Uses radio-wave frequencies to send data directly between transmitters and receivers.

WiFi direct

enables peer-to-peer communications, so devices can connect directly. It allows users to transfer content among devices without having to rely on a wireless antenna.

disadvantage of satellite

expensive must have unobstructed line of sight signals experience propagation delay must use encryption for security

near-field communication

has the smallest range of any short-range wireless networks

Smartphone

is a new class of digital communication device that provides an organizer, cell phone, digital camera, access to e-mail, Internet access, and short message service

Radio-frequency (RF) jamming

is a person, or device intentionally or unintentionally interferes with your wireless network transmissions.

Rouge access point

is an unauthorized access point to a wireless network. The rogue is an "evil twin" someone who wishes to access a wireless network for malicious purposes.

downside of smartphones

is that people can use them to copy and pass on confidential information

War driving

is the act of locating WLANs while driving or walking around a city pr elsewhere. To drive or walk you simply need a WiFi detector and a wirelessly enabled computer

Wireless Application Protocol

is the standard that enables wireless devices to access Web-based information and services.

Using your cell phone to purchase a Coke from a vending machine is an example of

micropayment

Dematerialization

occurs when the many function of many physical devices are included in one other physical device. ex: you get camera, calculator, the web, video games, etc. all in your phone now.

The technology that uses radio waves to identify individual items is

radio-frequency identification.

Eavesdropping

refers to the efforts by unauthorized users to access data that are traveling over wireless networks

3 factors prevent the commercial WiFi market from expanding even furhter

roaming security cost

4 types of threats to wireless networks

rogue access points, war driving, eavesdropping, radio-frequency jamming.

Short-range wireless networks

simplify the task of connecting one device to another. In addition they eliminate wires, they enable users to move around while they use the device

mobile financial applications

the bottom line for mobile financial applications is to make it more convenient for customers to transact business regardless of where they are or what time it is

Wireless media, or broadcast media, transmit signals without wires.

the major types of wireless media are microwave, satellite, and radio.

Super WiFi

was designed by the U.S federal communication commission (FCC) to describe a wireless network proposal that creates long-distance wireless internet connections. Super WiFi uses the lower-frequency "white spaces" between broadcast TV channels. These frequencies enable the signal to travel further and penetrate walls better than normal WiFi frequencies.

The development of mobile commerce is driven by the following factors

widespread availability of mobile devices. bandwidth improvement.